Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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PIV Analysis of Flow around a Submerged Pitch Damping Foil

몰수형 피치댐핑포일 주위 유동의 PIV 해석

  • Gim, Ok-Sok (Dept. of Guard and Safety, West Regional Headquaters, Korea Coast Guard) ;
  • Lee, Gyoung-Woo (Dept. of Naval Architecture & Ocean Engineering, Mokpo National Maritime University)
  • 김옥석 (서해지방해양경찰청 경비안전과) ;
  • 이경우 (목포해양대학교 조선해양공학과)
  • Received : 2012.03.10
  • Accepted : 2012.09.17
  • Published : 2012.10.20
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Abstract

An experimental study is carried out to investigate the near-wake characteristics of a NACA 0018 foil with a flat plate. Two-frame grey-level cross correlation PIV method is used to measure the local flow characteristic around a pitch damping foil to control the vertical motion of high speed crafts in a circulating water channel. The analysis also includes angles of attack 10 and 20 degrees respectively. Reynolds number $Re{\fallingdotseq}3.5{\times}10^4$ based on the chord length(C=100mm) of NACA0018 has been applied during the whole experiments. The distance between the foil and the flat plate is D/C=0.5, 1.0 and 1.5 respectively. The channel effect according as the distance between the foil and the flat plate has a close relation with the velocity distributions around the foil. In the wake of 20-degree of attack, the complex turbulent flow and a thick boundary layer are formed due to the processes of vortex generation and dissipation.

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References

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